Package alluxio.worker.block

Interface Summary

Interface	Description
BlockStore	An abstraction of block store on worker.
BlockStoreEventListener	A listener interface for receiving metadata mutation events of BlockStore.
BlockStoreMeta	Interface for the block store meta in Alluxio.
BlockWorker	A block worker in the Alluxio system.
LocalBlockStore	A blob store interface to represent the local storage managing and serving all the blocks in the local storage.

Class Summary

Class	Description
AbstractBlockStoreEventListener	A block store event listener base class implementing the BlockStoreEventListener interface with empty methods bodies.
AllMasterRegistrationBlockWorker	The class is responsible for managing all top level components of BlockWorker.
AllocateOptions	Used to specify various options while allocating space.
AsyncBlockRemover	Asynchronous block removal service.
BlockHeartbeatReport	Container for the delta information in each worker-to-master heartbeat.
BlockHeartbeatReporter	Represents the delta of the block store within one heartbeat period.
BlockLock	A resource lock for block.
BlockLockManager	Handle all block locks.
BlockMapIterator	Each iteration returns a list of LocationBlockIdListEntry which consists of blocks for one RegisterWorkerPRequest.
BlockMasterClient	A wrapper for the gRPC client to interact with the block master, used by alluxio worker.
BlockMasterClientPool	Class for managing block master clients.
BlockMasterSync	Task that carries out the necessary block worker to master communications, including register and heartbeat.
BlockMasterSyncHelper	The helper class for block master sync related methods.
BlockMetadataAllocatorView	This class exposes a narrower read-only view of block metadata to allocators.
BlockMetadataEvictorView	This class exposes a narrower view of BlockMetadataManager to Evictors, filtering out un-evictable blocks and un-allocatable space internally, so that evictors and allocators can be developed with much simpler logic, without worrying about various constraints, e.g.
BlockMetadataManager	Manages the metadata of all blocks in managed space.
BlockMetadataView	This class is an abstract class for allocators and evictors to extend to provide limited access to block metadata.
BlockMetricsReporter	This class listens on block events and increases the metrics counters.
BlockStoreLocation	Where to store a block within a block store.
BlockSyncMasterGroup	An abstraction layer that manages the worker heartbeats with multiple block masters.
BlockSyncMasterGroup.Factory	The factory class.
BlockWorkerFactory	Factory to create a BlockWorker instance.
CacheRequestManager	Handles client requests to synchronously/asynchronously cache blocks.
CreateBlockOptions	Method options for create a block.
DefaultBlockStoreMeta	This class holds the metadata information of a block store.
DefaultBlockWorker	The class is responsible for managing all top level components of the Block Worker.
DefaultBlockWorker.Metrics	This class contains some metrics related to the block worker.
FuseManager	The Fuse manager that is responsible for managing the Fuse application lifecycle.
MonoBlockStore	A implementation of BlockStore.
PinListSync	PinListSync periodically syncs the set of pinned inodes from master, and saves the new pinned inodes to the BlockWorker.
RegisterStreamer	This class oversees the logic of registering with the master using a stream of RegisterWorkerPRequest.
RemoteBlockReader	Reads a block from a remote worker node.
SpecificMasterBlockSync	The block master sync thread when workers are registered to all masters.
SpecificMasterBlockSync.Metrics	Metrics.
TestSpecificMasterBlockSync	A test SpecificMasterBlockSync that adds some interfaces for testing.
TieredBlockStore	This class represents an object store that manages all the blocks in the local tiered storage.
UfsInputStreamCache	This class implements a BlockReader to read a block directly from UFS, and optionally cache the block to the Alluxio worker if the whole block it is read.
UfsIOManager	Control UFS IO.
UnderFileSystemBlockReader	This class implements a BlockReader to read a block directly from UFS, and optionally cache the block to the Alluxio worker if the whole block it is read.
UnderFileSystemBlockStore	This class manages the virtual blocks in the UFS for delegated UFS reads/writes.

Enum Summary

Enum	Description
BlockLockType	A read-write lock to guard one block.
BlockStoreType	The different implementation of LocalBlockStore that can be instantiated.
WorkerMasterRegistrationState	The enum class for worker master registration state.